What happened: Mercedes driver Kimi Antonelli headed out from the garage to take his spot on the starting grid at Autodromo Hermanos Rodriguez. Antonelli participated after being excused from earlier media duties while recovering from a viral illness. He slots into fifth position on the grid.

Why it matters: Mercedes enters the Grand Prix with strong forward track position as teammate Lewis Hamilton starts on pole. After Antonelli topped Friday's practice timesheet, the team aims to convert front-row pace into podium points in Mexico City.

What to watch: The Mexico City Grand Prix begins shortly at Autodromo Hermanos Rodriguez.